Improvement in self-reclining chairs



G. NIDERKGRN.

SeIf-Reclining Chairs.

Patented August 19 AM. momumoeMPn/n co. nm osammf's PROCESS) UNITED STATES PATENT OFFICE. [Y

GEORGES NIDERKORN, OF WEST MOUNT VERNON, NEW YORK.

lMPROVEMENT IN SELF-RECLINING CHAIRS.

Specification forming part of Letters Patent No. 142,039, dated August 19, 1873; application filed J une 25, 1873.

To all whom it may concern:

Be it known that I, GEoReEs NIDERKORN, of West Mount Vernon, VVestchester county, in the State of New York, have invented a new and Improved Self-Adjusting Chair, of which the following is a specification:

The object of my invention is to produce a chair whose hinged back and seat are so connected that their movements will be jointly, causing thereby the chair to adapt itself to any position desired by the occupant. My invention consists in so connecting the pivoted back with the hinged seat that any pressure against the upper part of the back will cause the back portion of the seat to swing up,

while any pressure on the back part of the seat will cause the top portion of the back to swing forward. Thus, if a person desires to sit erect, he will naturally press heavier on the back portion of the-seat, which will, in this case, cause the upper part of the back to assume an upright position, while, when the occupant leans back, he will press harder against the upper part of the back, consequently raising the back portion of the seat.

Figure 1 in the drawing represents a longitudinal section through the line a c, Fig. 2, of my improved self-adjusting chair. Fig. 2 is a front view of the same.

Similar letters of reference indicate correspondin g parts.

A A are the two side pieces of the chairframe, which are connected with each other by means of three or more cross'bars, b, d, and e. The seat F is hinged to the foremost bar, I), while the back G is pivoted to the side pieces A A by means of pivot-pins ff at each side. The bar at serves to sustain the back when it is in the most inclined position, while the bar 6 supports theseat and back when the seat is in the most depressed position. The lower part of the back G is provided at the sides with projecting lugs on, which have pins a nthat reach beneath the seat and allow it to rest thereon. In this way any pressure upas specified.

on the back part of the hinged seat will serve to press down the projections 42, causing that part of the back which is situated above the pivots to swing forward, while, if pressure is put against the upper part of the back, the

projections n will be carried upward, and will consequently lift the back part of the seat. The full lines in Fig. 1 represent both the seat F and the back G in the position which they assume when the occupant sits erect-that is to say, the upper part of the back is swung forward and theback part ofthe seat is depressedwhile the dotted lines represent the seat F and the back G in the position they assume when the occupant rests in an inclined position on the chair, the upper part of the back being then swung backward, and the back part of the seat being raised. The back is, on both sides, provided with upright ornamental attach ments H H, which rest on curves 71. formed on the side pieces A A, and struck with the pivots ff as centers. These attachments will, when the back of the chair moves either forward or backward, always follow its motions, and turn on the curves h of the side pieces, and serve partly to steady the back of the chair during its movements, as well as to connect the same, in an ornamental manner, with the side pieces.

I claim as my invention and desire to secure by Letters Patent- 1. A chair provided with a pivoted back and a seat hinged at its front end, with the rear end of the seat resting loosely on the supportson the lower end of the back, substantially as and forthe purpose set forth.

2. The pivoted chair-back G, provided with the lugs m m and projecting pins n n, which constitute the supports for the hinged seat,

GEORGES NIDERKOBN.

Witnesses:

J. LAPLACE, J. DONJEAN. 

